ca. 1931-1943
| Anthonie Martinus Dulfer | |
| G: | ca. 1931 |
| Katwijk | |
| O: | 7 okt 1943 |
| Leiden | |
ca. 1894-Ja, datum echter onbekend
| Pieter Dulfer | |
| G: | ca. 1894 |
| Numansdorp | |
| O: | Ja, datum echter onbekend |
ca. 1891-1963
| Johnna Catharina van der Graaff | |
| G: | ca. 1891 |
| Hillegersberg | |
| H: | 19 sep 1918 |
| Hillegersberg | |
| O: | 30 jul 1963 |
| Rotterdam | |
|
1863-1955
| Anton Frederik Bernard Dulfer | |
| G: | 6 mrt 1863 |
| Schiedam | |
| O: | 18 jan 1955 |
| Rotterdam | |
1853-1943
| Francina Maasdam | |
| G: | 1853 |
| H: | 16 apr 1891 |
| Numansdorp | |
| O: | 21 jan 1943 |
| Numansdorp | |